Rope-clamp.



UNITED sTATEs PATENT oEEIcE.

CLINTON W. RUSSELL, 0F DETROIT, MICHIGAN.

ROPE-CLAMP.

T o all whom it may concern:

Be it known that I, CLINTON W. RUSSELL, a citizen of the United Statesof America, residing at Detroit, in the county of Wayne and State ofMichigan, have invented certain new and useful Improvements in Rope-Clamps, of which the following is a specification, reference being hadAtherein to the accompanying drawings.

My invention relates more particularly to logging apparatus and has forits object the obtaining` of a device for quickly and securely fasteningthe guy lines stationary in the apparatus.

In the present state of the art, it'is customary to secure the apparatusused for logging by guy lines which are fastened about trees, and it isusual to secure these lines by wrapping them several times about thetree so as to secure the requisite friction to prevent slipping. It is,however, necessary to first place the lines under tension, as thewrapping about the tree will as eifectuously prevent the tightening ofthe lines as they are instrumental in preventing slipping'back after theline is taut. Thus, if it is necessary to tighten one of the lines, thecoils about the tree must be loosened and the line drawn taut, anoperation usually requiring the attention of several men.

My invention is designed to avoid the dif`- culty above set forth byproviding a simple rope clamp adapted to elfectually secure the linewith but a single wrap about the tree. Furthermore, this clamp whenloosened forms a guide for the rope,`which will permit of tightenino' bydrawing u on the return strand and by attaching this strand to thehoisting drum of the engine the line may be extended without manuallabor. When the line is taut, the clamp may be secured and will thenprevent slipping without any injury to the rope.

In the drawings-Figure l is a sectional side elevation of the clamp;Fig. 2 is an end elevation thereof; and Fig. 3 is a diagram illustratingthe clamp in use.

A is the frame preferably in the form of a U-shaped strap.v

B and C are the clamping jaws, which are vembraced by the frame A, thejaw B being swiveled to a threaded shank D passing through acorrespondingly threaded aperture in the end of the frame. The jaw C isprovided with guide lugs E which hold it from lateral movement inrelation to the Specicaton of Letters Patent.

Application led April 19, 1909.

Patented Aug. 9, 1910.

Serial No. 490,755. n

frame, but permit of its being inserted and removed at the open end ofthe U.

F is a pin for detachably securing the aw C in the frame and forming anabutment therefor. This pin passes through alined apertures in the sidebars of the frame and engages a concave bearing Gr on the under side ofthe jaw C.

I-I is a double armed handle secured to the shank I) and provided witheyes I with which an operating lever may be engaged.

In use, the guy line J is clamped about a treeas indicated at K-and theclamp is then engaged with the two strands. This may be quicklyaccomplished by drawing the pin F, removing the jaw C, and, after theinsertion of the two strands of the rope, replacing said jaw and pin.The return strand L of the line is then pulled either manually, or bythe hoisting of the engine, until the line is taut, after which thehandle H is turned to clamp the adjacent strands of the rope between theaws B and C.

To provide a firmer grip, the adjacent faces of the aws form a wavedline, and are also preferably grooved to receive jthe strands of therope. One end of each j aw is also preferably bent over, as at M, andbifurcated to embrace the adjacent jaw at N, which increases the gripupon the rope. At t-he same time, when the aws are separated, roundedfaces are presented to the strands, which will not injure them as theyare drawn through the clamp.

I/Vhat I claim as my invention is:

l. A rope clamp comprising a U-shaped frame, a clamping screw engaging athreaded bearing in the central vportion of said frame, jaws slidablebetween the furcations of said frame and having parallel groovedadjacent faces, and a removable pin forming an abutment for one of saidjaws permitting of its insertion and removal from the frame.

2. A rope clamp, comprising a bifurcated frame, clamping jaws engageablewith said frame between the furcations thereof, an n

